CN206786328U - A kind of quick service drain valve - Google Patents
A kind of quick service drain valve Download PDFInfo
- Publication number
- CN206786328U CN206786328U CN201720413842.9U CN201720413842U CN206786328U CN 206786328 U CN206786328 U CN 206786328U CN 201720413842 U CN201720413842 U CN 201720413842U CN 206786328 U CN206786328 U CN 206786328U
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- CN
- China
- Prior art keywords
- valve
- annular groove
- cover body
- hole
- flap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
It the utility model is related to a kind of quick service drain valve, including valve body, valve seat, elasticity shroud, flap, bonnet and valve rod, elasticity is shrouded including cover body, cover body has axial through hole, through-hole wall has interior annular groove, has outer annular groove outside cover body, interior annular groove is coaxial with outer annular groove and axially offsets, cover body lateral wall is provided with least one limbers, and limbers is located at below interior annular groove and outer annular groove；Valve seat and elasticity, which are shrouded, to be arranged in valve body, and flap is set in through-holes and is slidably matched with through hole, and elasticity, which is shrouded, to be pressed on valve seat.Valve seat is independent structure in the utility model, and maintenance is convenient；Elasticity is shrouded in the presence of axial force, ensures the sealing at the valve seat back side, and flap uses integral type flap, the also flexible guiding shrouded, homogeneous media is flowed to runner, to flap active force without acceptance of persons, is protected sealing surface, is improved the service life of drain valve.
Description
Technical field
It the utility model is related to valve technology field, more particularly to a kind of quick service drain valve.
Background technology
Hydrophobic valve is the security setting control unit in boiler steam conveying system, and its effect is particularly significant therefore right
Sealing property, service life, the convenience of maintenance of valve require very high.Jet chimney, must be by pipeline when starting to start
Close to vapor (steam) temperature during preheating temperature, this will condense some vapor, in addition, steam must have preferably when flowing in the duct
Insulation, but still can not avoid due to radiation loss, cause some vapor to condense, the steam containing condensed water water will become tide
It is wet and rich in erosion, with increasing for condensed water, under swiftly flowing vapor action, kinetic energy " water bullet " can be produced,
The damage of pipe-line system can be caused, security incident can be caused when serious.Drain valve will also prevent to steam while condensed water is discharged
Vapour lets out, and prevents heat-energy losses.
As shown in figure 1, existing drain valve is by valve body (sequence number 1), flap (sequence number 4), valve rod (sequence number 8), bonnet (sequence number
5) the major part composition such as, connected between its flap and valve rod using T-slot (detachable form), flap valve body sealing surface (sequence
Number 19) built-up welding stellite material, pneumatic headband ovable valve stem and the upper and lower action of flap, so as to quickly realize that valve opens and closes,
Have the function that hydrophobic.
Prior art realizes self sealss using flap and valve body, on valve body built-up welding encapsulant department too immediately, due to valve
The defects of body lumen is too small, too deep, forms a deep hole built-up welding, and sealing surface is also easy to produce stomata, sand holes, and the hardness sealed is led to
Normal (HRC≤38) less than normal, easily damaged in High Pressure Difference, easily under the operating mode with impurity, valve easily in leak, cause the thermal effect of power plant
Reduce, the result that drain valve can not guarantee an overhaul time often occur；And built-up welding encapsulant is formed directly on valve body
Seal valve seat, it has not been convenient to repair.
Utility model content
The utility model aims to provide a kind of quick service drain valve, and easy to maintenance, sealing property is reliable.
To reach above-mentioned purpose, the technical solution adopted in the utility model is as follows：
Quick service drain valve, including valve body, valve seat, elasticity are shrouded, flap, bonnet and valve rod, the elasticity are shrouded including cover
Body, the cover body have axial through hole, and the through-hole wall has interior annular groove, there is outer annular groove outside the cover body, described interior
Annular groove is coaxial with outer annular groove and axially offsets, and the depth of the interior annular groove and outer annular groove is all higher than the two of cover body thickness
/ mono-, the cover body lateral wall is provided with least one limbers, and the limbers connects with through hole, and the limbers is positioned at interior
Below annular groove and outer annular groove；
The valve seat and elasticity, which are shrouded, to be arranged in valve body, and the flap sets in through-holes and is slidably matched with through hole,
The cover body upper end is withstood on bonnet, and cover body lower end is pressed on valve seat, the valve rod lower end through bonnet put in through hole with valve
Valve is affixed, and sealing surface of seat is adapted to valve clack sealing surface.
Further, the flap manufactures with valve-stem integrated.
Further, the interior annular groove and outer annular groove are located at cover body top, and the limbers is located at cover body bottom.
Further, wound gasket is provided between the valve seat and valve body, shown wound gasket is on valve seat.
Further, the interior annular groove is located above outer annular groove.
Further, the limbers is radially arranged.
Further, the cover body lateral wall is circumferentially evenly equipped with some limbers.
Further, the cover body includes integrally manufactured annular boss, and the annular boss is located at covering on top, described
Interior annular groove and outer annular groove are at annular boss, and the outer annular groove is on the external cylindrical surface of annular boss.
Further, the cover body bottom surface limited location hole, the spacing hole connect and coaxial with through hole, the spacing hole
Diameter be more than through hole diameter, the spacing hole be located at limbers lower section, the valve seat top surface have be adapted to spacing hole it is spacing
Projection, the spacing preiection are mounted in spacing hole.
Compared with prior art, the utility model has the advantages that：
1. valve seat is independent structure in the utility model, sealing surface is made on valve seat, easy to operate, quality is easily protected
Card, maintenance is convenient, and passes existing drain valve built-up welding sealing surface directly on valve body, forms Deep Hole Welding, welds hardness and quality
There is no the height of independent valve seat built-up welding；
2. elasticity is shrouded in the presence of axial force, ensure the sealing at the valve seat back side, flap is arranged on during elasticity is shrouded simultaneously
There are through-hole guides and limbers uniform flow, make WATER AS FLOW MEDIUM or steam circumferentially uniform to the impulsive force of flap, flap is made without acceptance of persons
Firmly, sealing surface is protected, improves the service life of sealing surface；
3. valve rod is connected with flap using T-slot in the prior art, under the effect of medium power, an eccentric force is formed, is made
There is no self-centering into flap closing process, cause the damage of sealing surface；The utility model flap uses integral type flap, also
The flexible guiding shrouded, makes homogeneous media flow to runner, to flap active force without acceptance of persons, protects sealing surface, improves close
The service life of front cover, the service life of drain valve is improved, reduce the harm of steam, increase steam power plant thermal effect；
4. valve seat, elasticity are shrouded forms quick release structure with integral type valve rod flap, internals are convenient to mount and dismount, are easy to use
Repair at family.
Brief description of the drawings
Fig. 1 is the structural representation of prior art；
Fig. 2 is structural representation of the present utility model；
Fig. 3 is the structural representation that elasticity is shrouded；
Fig. 4 is the structural representation of valve seat；
Fig. 5 is the structural representation of flap；
In figure：1- valve bodies, 2- valve seats, 3- elasticity are shrouded, 4- flaps, 5- bonnets, 6- wound gaskets, 7- sealing surface of seats, 8-
Valve rod, 9- cover bodies, 10- outer annular grooves, 11- limbers, 12- annular boss, 13- spacing holes, 14- through holes, 15- interior annular grooves,
16- spacing preiections, 17- valve clack sealing surfaces, 19- flap valve body sealing surfaces.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing, to this reality
It is further elaborated with new.
As shown in Figure 2,3, quick service drain valve disclosed in the utility model, including valve body 1, valve seat 2, elasticity shroud 3, flap
4th, bonnet 5 and valve rod 8, elasticity, which shrouds 3, includes cover body 9, and cover body 9 has axial through hole 14, and the inwall of through hole 14 has interior annular groove 15,
There is outer annular groove 10 outside cover body 9, interior annular groove 15 is coaxial with outer annular groove 10 and axially offsets, interior annular groove 15 and outer ring
The depth of groove 10 is all higher than the half of the thickness of cover body 9, and interior annular groove 15 makes cover body 9 axially have necessarily with outer annular groove 10
Elasticity.The lateral wall of cover body 9 is provided with least one limbers 11, and limbers 11 connects with through hole 14, and limbers 11 is located at annular
Groove 15 and the lower section of outer annular groove 10.
Valve seat 2 and elasticity are shrouded 3 and are arranged in valve body 1, and flap 4 is arranged in through hole 14 and is slidably matched with through hole 14,
The upper end of cover body 9 is withstood on bonnet 5, and the lower end of cover body 9 is pressed on valve seat 2, the lower end of valve rod 8 through bonnet 5 put in through hole 14 with valve
Valve 4 is affixed, preferably, flap 4 and valve rod 8 are integrally manufactured.Wound gasket 6, shown wound gasket are provided between valve seat 2 and valve body 1
6 on valve seat 2, and elasticity is shrouded 3 bottoms and is pressed on valve seat 2, and valve seat 2 compresses wound gasket 6.
As shown in Figure 4,5, sealing surface of seat 7 is adapted to valve clack sealing surface 17, and sealing surface of seat 7 and valve clack sealing surface 17 are equal
Using plasma surfacing Si Taili.It is metal hard-sealing between flap 4 and valve seat 2, sealing surface uses plasma surfacing Si Taili,
Built-up welding is readily obtained guarantee, and hardness is high, sealed reliable.Valve seat is independent structure, using plasma welding machine built-up welding sealing surface of seat,
Built-up welding hardness is high, and quality is easily guaranteed that, and existing drain valve built-up welding sealing surface directly on valve body, forms Deep Hole Welding, welding
Hardness and quality do not have the height of independent valve seat built-up welding.
As shown in Fig. 2 interior annular groove 15 and outer annular groove 10 are located at the top of cover body 9, limbers 11 is located at the bottom of cover body 9.
Further, interior annular groove 15 is located at the top of outer annular groove 10.Further, limbers 11 is radially arranged.Preferably, cover body
9 lateral walls are circumferentially evenly equipped with some limbers 11.
Cover body 9 includes integrally manufactured annular boss 12, and annular boss 12 is located at the top of cover body 9, interior annular groove 15 and outer
Annular groove 10 is at annular boss 12, and outer annular groove 10 is on the external cylindrical surface of annular boss 12.Cover body 9 is cylinder,
The bottom surface limited location hole 13 of cover body 9, spacing hole 13 connects with through hole 14 and coaxially, the diameter of spacing hole 13 is more than the straight of through hole 14
Footpath, spacing hole 13 is located at the lower section of limbers 11, as shown in figure 4, the top surface of valve seat 2 has the spacing preiection 16 being adapted to spacing hole 13,
Spacing preiection 16 is mounted in spacing hole 13, realizes that valve seat 2 shrouds 3 radial position and fixed with elastic.
The utility model employs valve seat and valve body split structure, and valve seat ensures the valve seat back side in the case where elasticity shrouds compression
Sealing；Flap employs the replacement of integral type flap with valve rod, and flap is flexible to shroud guiding, makes WATER AS FLOW MEDIUM or steam to flap
Impulsive force is circumferentially uniform；Lumen is middle flange arrangement；Valve seat, elasticity are shrouded, integral type flap forms quick release structure, when
When needing maintenance, internals can be changed rapidly, shorten the time between overhauls(TBO).
Certainly, the utility model can also have other numerous embodiments, without departing substantially from the utility model spirit and its essence
In the case of, those skilled in the art can make various corresponding changes and deformation, but these according to the utility model
Corresponding change and deformation should all belong to the scope of the claims appended by the utility model.
Claims (10)
- A kind of 1. quick service drain valve, it is characterised in that:(3), flap (4), bonnet are shrouded including valve body (1), valve seat (2), elasticity (5) and valve rod (8), the elasticity, which shrouds (3), includes cover body (9), and the cover body (9) has axial through hole (14), the through hole (14) inwall has interior annular groove (15), has outer annular groove (10), the interior annular groove (15) and outer ring outside the cover body (9) Groove (10) is coaxial and axially offsets, and the interior annular groove (15) and the depth of outer annular groove (10) are all higher than cover body (9) thickness Half, cover body (9) lateral wall are provided with least one limbers (11), and the limbers (11) connects with through hole (14) Logical, the limbers (11) is located at below interior annular groove (15) and outer annular groove (10)；The valve seat (2) and elasticity are shrouded (3) and are arranged in valve body (1), and the flap (4) is arranged in through hole (14) and with leading to Hole (14) is slidably matched, and cover body (9) upper end is withstood on bonnet (5), and cover body (9) lower end is pressed on valve seat (2), the valve rod (8) lower end is put in affixed with flap (4) in through hole (14) through bonnet (5), the sealing surface of seat (7) and valve of the valve seat (2) Valve clack sealing surface (17) adaptation of valve (4).
- 2. quick service drain valve according to claim 1, it is characterised in that：The flap (4) and valve rod (8) are integrally manufactured.
- 3. quick service drain valve according to claim 1, it is characterised in that：The interior annular groove (15) and outer annular groove (10) Positioned at cover body (9) top, the limbers (11) is located at cover body (9) bottom.
- 4. quick service drain valve according to claim 1, it is characterised in that：It is provided with and twines between the valve seat (2) and valve body (1) Around pad (6), shown wound gasket (6) is on valve seat (2).
- 5. the quick service drain valve according to claim 1 or 3, it is characterised in that：The interior annular groove (15) is located at outer ring Above groove (10).
- 6. quick service drain valve according to claim 3, it is characterised in that：The limbers (11) is radially arranged.
- 7. according to the quick service drain valve described in claim 1,3 or 6, it is characterised in that：Cover body (9) lateral wall is circumferentially uniform There are some limbers (11).
- 8. quick service drain valve according to claim 1, it is characterised in that：The cover body (9) includes integrally manufactured annular Boss (12), the annular boss (12) are located at the top of cover body (9), and the interior annular groove (15) and outer annular groove (10) are located at ring Shape boss (12) place, the outer annular groove (10) is on the external cylindrical surface of annular boss (12).
- 9. the quick service drain valve according to claim 1 or 8, it is characterised in that：Cover body (9) the bottom surface limited location hole (13), the spacing hole (13) connects and coaxial with through hole (14), and the diameter of the spacing hole (13) is more than the straight of through hole (14) Footpath, the spacing hole (13) are located at below limbers (11), and valve seat (2) top surface has the limit convex being adapted to spacing hole (13) Rise (16), the spacing preiection (16) is mounted in spacing hole (13).
- 10. quick service drain valve according to claim 1, it is characterised in that：The sealing surface of seat (7) and valve clack sealing surface (17) it is metal sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720413842.9U CN206786328U (en) | 2017-04-19 | 2017-04-19 | A kind of quick service drain valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720413842.9U CN206786328U (en) | 2017-04-19 | 2017-04-19 | A kind of quick service drain valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206786328U true CN206786328U (en) | 2017-12-22 |
Family
ID=60707481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720413842.9U Expired - Fee Related CN206786328U (en) | 2017-04-19 | 2017-04-19 | A kind of quick service drain valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206786328U (en) |
-
2017
- 2017-04-19 CN CN201720413842.9U patent/CN206786328U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 Termination date: 20180419 |